Hello, We recently upgraded our ELK stack from v 7.4.0 to 7.7.1 and now we noticed that the OS CPU is 100% on our hot data nodes which do the indexing. The OS CPU is almost always at 100%, the process CPU is close to 45-50%. We checked the hot threads and saw 98% of the times it is Lucene Merging …

High OS Cpu usage on 7.7.1

Ignacio_Vera (Ignacio Vera) July 14, 2020, 1:14pm 5

I am wondering if the problem you are experiencing is due to wrong JVM settings after upgrading. See: Elasticsearch 7.8 worse heap management

1 Like

Elasticsearch is a trademark of Elasticsearch BV, registered in the U.S. and in other countries
Trademarks
Terms
Privacy
Brand
Code of Conduct

Apache, Apache Lucene, Apache Hadoop, Hadoop, HDFS and the yellow elephant logo are trademarks of the Apache Software Foundation in the United States and/or other countries.